Annotation of XNU/osfmk/i386/genassym.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
                      3:  *
                      4:  * @APPLE_LICENSE_HEADER_START@
                      5:  * 
                      6:  * The contents of this file constitute Original Code as defined in and
                      7:  * are subject to the Apple Public Source License Version 1.1 (the
                      8:  * "License").  You may not use this file except in compliance with the
                      9:  * License.  Please obtain a copy of the License at
                     10:  * http://www.apple.com/publicsource and read it before using this file.
                     11:  * 
                     12:  * This Original Code and all software distributed under the License are
                     13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
                     14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
                     15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
                     16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
                     17:  * License for the specific language governing rights and limitations
                     18:  * under the License.
                     19:  * 
                     20:  * @APPLE_LICENSE_HEADER_END@
                     21:  */
                     22: /*
                     23:  * @OSF_COPYRIGHT@
                     24:  */
                     25: /* 
                     26:  * Mach Operating System
                     27:  * Copyright (c) 1991,1990 Carnegie Mellon University
                     28:  * All Rights Reserved.
                     29:  * 
                     30:  * Permission to use, copy, modify and distribute this software and its
                     31:  * documentation is hereby granted, provided that both the copyright
                     32:  * notice and this permission notice appear in all copies of the
                     33:  * software, derivative works or modified versions, and any portions
                     34:  * thereof, and that both notices appear in supporting documentation.
                     35:  * 
                     36:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
                     37:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
                     38:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     39:  * 
                     40:  * Carnegie Mellon requests users of this software to return to
                     41:  * 
                     42:  *  Software Distribution Coordinator  or  [email protected]
                     43:  *  School of Computer Science
                     44:  *  Carnegie Mellon University
                     45:  *  Pittsburgh PA 15213-3890
                     46:  * 
                     47:  * any improvements or extensions that they make and grant Carnegie Mellon
                     48:  * the rights to redistribute these changes.
                     49:  */
                     50: 
                     51: #include <platforms.h>
                     52: #include <cpus.h>
                     53: #include <mach_kdb.h>
                     54: #include <mach_ldebug.h>
                     55: #include <stat_time.h>
                     56: 
                     57: /*
                     58:  * Pass field offsets to assembly code.
                     59:  */
                     60: #include <kern/ast.h>
                     61: #include <kern/thread.h>
                     62: #include <kern/task.h>
                     63: #include <kern/lock.h>
                     64: #include <kern/thread_act.h>
                     65: #include <kern/thread_pool.h>
                     66: #include <ipc/ipc_space.h>
                     67: #include <ipc/ipc_port.h>
                     68: #include <ipc/ipc_pset.h>
                     69: #include <kern/host.h>
                     70: #include <kern/misc_protos.h>
                     71: #include <kern/syscall_emulation.h>
                     72: #include <i386/thread.h>
                     73: #include <mach/i386/vm_param.h>
                     74: #include <i386/seg.h>
                     75: #include <i386/pmap.h>
                     76: #include <i386/tss.h>
                     77: #include <mach/rpc.h>
                     78: #include <vm/vm_map.h>
                     79: #if    NCPUS > 1
                     80: #include <i386/mp_desc.h>
                     81: #endif
                     82: 
                     83: extern void   kernel_preempt_check(void);
                     84: cpu_data_t    cpu_data[NCPUS];
                     85: 
                     86: /*
                     87:  * genassym.c is used to produce an
                     88:  * assembly file which, intermingled with unuseful assembly code,
                     89:  * has all the necessary definitions emitted. This assembly file is
                     90:  * then postprocessed with sed to extract only these definitions
                     91:  * and thus the final assyms.s is created.
                     92:  *
                     93:  * This convoluted means is necessary since the structure alignment
                     94:  * and packing may be different between the host machine and the
                     95:  * target so we are forced into using the cross compiler to generate
                     96:  * the values, but we cannot run anything on the target machine.
                     97:  */
                     98: 
                     99: #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE)0)->MEMBER)
                    100: 
                    101: #if  0
                    102: #define DECLARE(SYM,VAL) \
                    103:        __asm("#DEFINITION#\t.set\t" SYM ",\t%0" : : "n" ((u_int)(VAL)))
                    104: #else
                    105: #define DECLARE(SYM,VAL) \
                    106:        __asm("#DEFINITION##define " SYM "\t%0" : : "n" ((u_int)(VAL)))
                    107: #endif
                    108: 
                    109: int    main(
                    110:                int             argc,
                    111:                char            ** argv);
                    112: 
                    113: int
                    114: main(
                    115:        int     argc,
                    116:        char    **argv)
                    117: {
                    118: 
                    119:        DECLARE("AST_URGENT",           AST_URGENT);
                    120: 
                    121: #if    MACH_LDEBUG
                    122:        /*
                    123:         * XXX 
                    124:         */
                    125: #define        SIMPLE_LOCK_TAG 0x5353
                    126: #define        MUTEX_TAG       0x4d4d
                    127:        DECLARE("TH_MUTEX_COUNT",       offsetof(thread_t, mutex_count));
                    128:        DECLARE("SIMPLE_LOCK_TAG",      SIMPLE_LOCK_TAG);
                    129:        DECLARE("MUTEX_TAG",            MUTEX_TAG);
                    130: #endif /* MACH_LDEBUG */
                    131:        DECLARE("TH_RECOVER",           offsetof(thread_t, recover));
                    132:        DECLARE("TH_CONTINUATION",      offsetof(thread_t, continuation));
                    133:        DECLARE("TH_TOP_ACT",           offsetof(thread_t, top_act));
                    134:        DECLARE("TH_KERNEL_STACK",      offsetof(thread_t, kernel_stack));
                    135: 
                    136:        DECLARE("TASK_EMUL",            offsetof(task_t, eml_dispatch));
                    137:        DECLARE("TASK_MACH_EXC_PORT",
                    138:                offsetof(task_t, exc_actions[EXC_MACH_SYSCALL].port));
                    139: 
                    140:        /* These fields are being added on demand */
                    141:        DECLARE("ACT_MACH_EXC_PORT",
                    142:                offsetof(thread_act_t, exc_actions[EXC_MACH_SYSCALL].port));
                    143: 
                    144:         DECLARE("ACT_THREAD",  offsetof(thread_act_t, thread));
                    145:        DECLARE("ACT_TASK",     offsetof(thread_act_t, task));
                    146:        DECLARE("ACT_PCB",      offsetof(thread_act_t, mact.pcb));
                    147:        DECLARE("ACT_KLOADED",  offsetof(thread_act_t, kernel_loaded));
                    148:        DECLARE("ACT_KLOADING", offsetof(thread_act_t, kernel_loading));
                    149:        DECLARE("ACT_LOWER",    offsetof(thread_act_t, lower));
                    150:        DECLARE("ACT_MAP",      offsetof(thread_act_t, map));
                    151: 
                    152:        DECLARE("MAP_PMAP",     offsetof(vm_map_t, pmap));
                    153: 
                    154:        /* XXX Until rpc buffers move from kernel stack to activation */
                    155:        DECLARE("RPC_CLIENT_BUF_SIZE",   
                    156:                        2 * RPC_KBUF_SIZE * sizeof(int) + 
                    157:                        RPC_DESC_COUNT * sizeof(rpc_copy_state_data_t) +
                    158:                        40 * sizeof(int));
                    159: 
                    160:        DECLARE("HOST_NAME",    offsetof(host_t, host_self));
                    161: 
                    162:        DECLARE("DISP_MIN",     offsetof(eml_dispatch_t, disp_min));
                    163:        DECLARE("DISP_COUNT",   offsetof(eml_dispatch_t, disp_count));
                    164:        DECLARE("DISP_VECTOR",  offsetof(eml_dispatch_t, disp_vector[0]));
                    165: 
                    166: #define IKS ((size_t) (STACK_IKS(0)))
                    167: 
                    168:        DECLARE("KSS_EBX", IKS + offsetof(struct i386_kernel_state *, k_ebx));
                    169:        DECLARE("KSS_ESP", IKS + offsetof(struct i386_kernel_state *, k_esp));
                    170:        DECLARE("KSS_EBP", IKS + offsetof(struct i386_kernel_state *, k_ebp));
                    171:        DECLARE("KSS_EDI", IKS + offsetof(struct i386_kernel_state *, k_edi));
                    172:        DECLARE("KSS_ESI", IKS + offsetof(struct i386_kernel_state *, k_esi));
                    173:        DECLARE("KSS_EIP", IKS + offsetof(struct i386_kernel_state *, k_eip));
                    174: 
                    175:        DECLARE("IKS_SIZE",     sizeof(struct i386_kernel_state));
                    176:        DECLARE("IEL_SIZE",     sizeof(struct i386_exception_link));
                    177: 
                    178:        DECLARE("PCB_FPS",      offsetof(pcb_t, ims.ifps));
                    179:        DECLARE("PCB_ISS",      offsetof(pcb_t, iss));
                    180: 
                    181:        DECLARE("FP_VALID",     offsetof(struct i386_fpsave_state *,fp_valid));
                    182:        DECLARE("FP_SAVE_STATE",
                    183:                offsetof(struct i386_fpsave_state *, fp_save_state));
                    184: 
                    185:        DECLARE("R_CS",         offsetof(struct i386_saved_state *, cs));
                    186:        DECLARE("R_SS",         offsetof(struct i386_saved_state *, ss));
                    187:        DECLARE("R_UESP",       offsetof(struct i386_saved_state *, uesp));
                    188:        DECLARE("R_EBP",        offsetof(struct i386_saved_state *, ebp));
                    189:        DECLARE("R_EAX",        offsetof(struct i386_saved_state *, eax));
                    190:        DECLARE("R_EBX",        offsetof(struct i386_saved_state *, ebx));
                    191:        DECLARE("R_ECX",        offsetof(struct i386_saved_state *, ecx));
                    192:        DECLARE("R_EDX",        offsetof(struct i386_saved_state *, edx));
                    193:        DECLARE("R_ESI",        offsetof(struct i386_saved_state *, esi));
                    194:        DECLARE("R_EDI",        offsetof(struct i386_saved_state *, edi));
                    195:        DECLARE("R_TRAPNO",     offsetof(struct i386_saved_state *, trapno));
                    196:        DECLARE("R_ERR",        offsetof(struct i386_saved_state *, err));
                    197:        DECLARE("R_EFLAGS",     offsetof(struct i386_saved_state *, efl));
                    198:        DECLARE("R_EIP",        offsetof(struct i386_saved_state *, eip));
                    199:        DECLARE("R_CR2",        offsetof(struct i386_saved_state *, cr2));
                    200:        DECLARE("ISS_SIZE",     sizeof (struct i386_saved_state));
                    201: 
                    202:         DECLARE("I_ECX",       offsetof(struct i386_interrupt_state *, ecx));
                    203:        DECLARE("I_EIP",        offsetof(struct i386_interrupt_state *, eip));
                    204:        DECLARE("I_CS",         offsetof(struct i386_interrupt_state *, cs));
                    205:        DECLARE("I_EFL",        offsetof(struct i386_interrupt_state *, efl));
                    206: 
                    207:        DECLARE("NBPG",                 I386_PGBYTES);
                    208:        DECLARE("VM_MIN_ADDRESS",       VM_MIN_ADDRESS);
                    209:        DECLARE("VM_MAX_ADDRESS",       VM_MAX_ADDRESS);
                    210:        DECLARE("KERNELBASE",           VM_MIN_KERNEL_ADDRESS);
                    211:        DECLARE("LINEAR_KERNELBASE",    LINEAR_KERNEL_ADDRESS);
                    212:        DECLARE("KERNEL_STACK_SIZE",    KERNEL_STACK_SIZE);
                    213: 
                    214:        DECLARE("PDESHIFT",     PDESHIFT);
                    215:        DECLARE("PTESHIFT",     PTESHIFT);
                    216:        DECLARE("PTEMASK",      PTEMASK);
                    217: 
                    218:        DECLARE("PTE_PFN",      INTEL_PTE_PFN);
                    219:        DECLARE("PTE_V",        INTEL_PTE_VALID);
                    220:        DECLARE("PTE_W",        INTEL_PTE_WRITE);
                    221:        DECLARE("PTE_INVALID",  ~INTEL_PTE_VALID);
                    222: 
                    223:        DECLARE("IDTSZ",        IDTSZ);
                    224:        DECLARE("GDTSZ",        GDTSZ);
                    225:        DECLARE("LDTSZ",        LDTSZ);
                    226: 
                    227:        DECLARE("KERNEL_CS",    KERNEL_CS);
                    228:        DECLARE("KERNEL_DS",    KERNEL_DS);
                    229:        DECLARE("USER_CS",      USER_CS);
                    230:        DECLARE("USER_DS",      USER_DS);
                    231:        DECLARE("KERNEL_TSS",   KERNEL_TSS);
                    232:        DECLARE("KERNEL_LDT",   KERNEL_LDT);
                    233: #if    MACH_KDB
                    234:        DECLARE("DEBUG_TSS",    DEBUG_TSS);
                    235: #endif /* MACH_KDB */
                    236: 
                    237:         DECLARE("CPU_DATA",    CPU_DATA);
                    238:         DECLARE("CPD_ACTIVE_THREAD",
                    239:                offsetof(cpu_data_t *, active_thread));
                    240: #if    MACH_RT
                    241:         DECLARE("CPD_PREEMPTION_LEVEL",
                    242:                offsetof(cpu_data_t *, preemption_level));
                    243: #endif /* MACH_RT */
                    244:         DECLARE("CPD_INTERRUPT_LEVEL",
                    245:                offsetof(cpu_data_t *, interrupt_level));
                    246:         DECLARE("CPD_SIMPLE_LOCK_COUNT",
                    247:                offsetof(cpu_data_t *,simple_lock_count));
                    248: 
                    249:        DECLARE("PTES_PER_PAGE",        NPTES);
                    250:        DECLARE("INTEL_PTE_KERNEL",     INTEL_PTE_VALID|INTEL_PTE_WRITE);
                    251: 
                    252:        DECLARE("KERNELBASEPDE",
                    253:                (LINEAR_KERNEL_ADDRESS >> PDESHIFT) *
                    254:                sizeof(pt_entry_t));
                    255: 
                    256:        DECLARE("TSS_ESP0",     offsetof(struct i386_tss *, esp0));
                    257:        DECLARE("TSS_SS0",      offsetof(struct i386_tss *, ss0));
                    258:        DECLARE("TSS_LDT",      offsetof(struct i386_tss *, ldt));
                    259:        DECLARE("TSS_PDBR",     offsetof(struct i386_tss *, cr3));
                    260:        DECLARE("TSS_LINK",     offsetof(struct i386_tss *, back_link));
                    261: 
                    262:        DECLARE("K_TASK_GATE",  ACC_P|ACC_PL_K|ACC_TASK_GATE);
                    263:        DECLARE("K_TRAP_GATE",  ACC_P|ACC_PL_K|ACC_TRAP_GATE);
                    264:        DECLARE("U_TRAP_GATE",  ACC_P|ACC_PL_U|ACC_TRAP_GATE);
                    265:        DECLARE("K_INTR_GATE",  ACC_P|ACC_PL_K|ACC_INTR_GATE);
                    266:        DECLARE("K_TSS",        ACC_P|ACC_PL_K|ACC_TSS);
                    267: 
                    268:        /*
                    269:         *      usimple_lock fields
                    270:         */
                    271:        DECLARE("USL_INTERLOCK",        offsetof(usimple_lock_t, interlock));
                    272: 
                    273:        DECLARE("INTSTACK_SIZE",        INTSTACK_SIZE);
                    274: #if    NCPUS > 1
                    275:        DECLARE("MP_GDT",          offsetof(struct mp_desc_table *, gdt[0]));
                    276:        DECLARE("MP_IDT",          offsetof(struct mp_desc_table *, idt[0]));
                    277: #endif /* NCPUS > 1 */
                    278: #if    !STAT_TIME
                    279:        DECLARE("LOW_BITS",        offsetof(struct timer *, low_bits));
                    280:        DECLARE("HIGH_BITS",       offsetof(struct timer *, high_bits));
                    281:        DECLARE("HIGH_BITS_CHECK", offsetof(struct timer *, high_bits_check));
                    282:        DECLARE("TIMER_HIGH_UNIT", TIMER_HIGH_UNIT);
                    283:        DECLARE("TH_SYS_TIMER",    offsetof(struct timer *, system_timer));
                    284:        DECLARE("TH_USER_TIMER",   offsetof(struct timer *, user_timer));
                    285: #endif
                    286: 
                    287:        return (0);
                    288: }
                    289: 
                    290: 
                    291: /* Dummy to keep linker quiet */
                    292: void
                    293: kernel_preempt_check(void)
                    294: {
                    295: }

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